Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
App Overview
TipMaster AI
TipMaster is the ultimate sports insights app for fans who love predictions, analysis, and expert picks across the world’s top leagues
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
22 ratings · Top 15%
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included17 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Differentiate and validate
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for TipMaster AI: map the core Sports workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Allow users to customize their profiles and preferences extensively.
Assumption to check: Limited personalization options for user profiles
Validate with people who use this workflow before building.
Hypothesis 2
Implement better filtering and categorization of tips.
Assumption to check: Difficult to discover new tips
Validate with people who use this workflow before building.
Hypothesis 3
Provide real-time updates and notifications for new tips.
Assumption to check: Inconsistent update frequency of tips
Validate with people who use this workflow before building.
Hypothesis 4
Offer more free content or trial periods to attract users.
Assumption to check: Paywall can deter users from exploring features
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
TipMaster is the ultimate sports insights app for fans who love predictions, analysis, and expert picks across the world’s top leagues. Whether you follow the World Cup, NFL, NBA, MLB, NHL, UFC, soccer, or college sports, TipMaster gives you access to real experts with verified performance data, transparent stats, and proven results. Explore daily sports picks, game predictions, and team insights designed for fans who want to understand the “why” behind every call. TipMaster focuses on insights, transparency, and fan engagement, helping users follow, learn, and copy strategies from the best minds in sports. With TipMaster you can: • Discover verified tipsters with real records and success rates • Follow your favorite experts and copy their top picks instantly • Browse daily picks, parlays, and prop insights across every major league • Compare performance, win rates, and trends over time • Track live match results and outcomes • Receive alerts when new picks are posted • Explore insights for NFL Sunday games, NBA matchups, MLB player props, NHL parlays, UFC cards, and top soccer leagues TipMaster’s advanced tracking system shows each tipster’s accuracy, average odds, ROI, and performance streaks, helping you identify who’s hot right now and who dominates specific leagues. Every tip is transparent, verified, and timestamped for full credibility. Fans love TipMaster because it makes watching sports more exciting, educational, and interactive. You can discover rising tipsters, analyze different prediction styles, and follow experts who match your approach to the game. Whether you’re looking for daily sports picks, data-driven predictions, or expert insights, TipMaster delivers the information you need to make smarter choices, all in one place. TipMaster covers: • NFL Picks and Predictions • NBA Daily Picks and Parlays • MLB Player Props and Insights • NHL Predictions and Expert Analysis • UFC Fight Picks and Stats • Soccer Tips for Premier League, La Liga, MLS, and more Built to empower fans through verified insights and data transparency, TipMaster helps you think like a pro, enjoy the game on a deeper level, and follow the experts shaping the sports world. Join thousands of fans who use TipMaster every day to explore expert analysis, follow top-performing tipsters, and experience the game in a smarter, more engaging way. Terms of Use: https://tipmaster.ai/terms
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
React Native
Expo
Supabase
Zustand
react-native-reanimated
expo-router
BUILD KIT DIFFICULTY
Expert
From the Build Kit assessment.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.
